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HOMESERVICE MANUALSFORD2010MUSTANG BASE, 2D COUPE, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 657 (AUTOMATIC TRANSAXLE/TRANSMISSION - FNR5)DIAGNOSIS AND TESTINGDIAGNOSTIC FLOW CHART
2010 Ford Mustang Base, 2D Coupe, Automatic

Diagnostic Flow Chart

2010 Ford Mustang Base, 2D Coupe, AutomaticSECTION Diagnostic Flow Chart
WARNING: This page is about a different car, the 2006 Mercury Milan and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
SPECIAL TOOL

G04681702
 Vehicle Communication Module (VCM) and Integrated
Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool

Prior to carrying out the flow test, the following items should be checked:

  • Know and understand the customer concerns.
  • Check the fluid level and condition.
  • Verify the concern by operating the vehicle.
  • Check for non-factory-installed items and verify correct installation.
  • Check the shift linkage adjustments.
  • Check TSBs for vehicle concerns.
  • Carry out quick test both KOER and KOEO.
  • Record all codes.
  • Verify that the vehicle transmission control module (TCM) is at the latest calibration release level.
DIAGNOSTIC FLOW CHART

Test Result Action
  1. Did you record any DTCs?
 Yes
No
2) Are any continuous test memory codes present? Yes
  • CLEAR codes and CARRY OUT drive cycle test.
No
  • GO to Step 4.
3) Did the continuous test memory codes reappear? Yes
  • REPAIR all continuous test memory codes. FOLLOW the pinpoint tests. REFER to the INTRODUCTION - GASOLINE article then appropriate service article, then GO to Step 4.
No GO to Step 4.
4) Is the concern repaired? Yes
  • CARRY OUT the final quick test to verify that no DTCs are present. CLEAR memory codes. Return vehicle to customer.
No
5) Are there any electrical concerns? Yes
  • INSTALL the scan tool and carry out output state control test, then GO to Step 6.
No
  • REFER to the hydraulic and mechanical routine, to diagnose and repair the concern, then GO to Step 7.
6) Was the transaxle concern corrected when the scan tool was installed? Yes
  • REFER to the INTRODUCTION - GASOLINE article and use the scan tool to diagnose cause of concern in the processor, vehicle harness or external inputs (sensors or switches).
No
  • REFER to the hydraulic and mechanical routine to diagnose the concern, then GO to Step 7.
7) Is the concern repaired? Yes
  • CARRY OUT the final quick test to verify that no DTCs are present. CLEAR memory codes. Return the vehicle to the customer.
No
  • Concern should have been repaired. GO back through the diagnostic flow chart and REVIEW other components that may have contributed to the concern. CHECK and DIAGNOSE those components. GET assistance from other sources.
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.